Oxidative hair dye compositions containing N-substituted o-phenylenediamines and method for their use
US3981677A · kind A · utility
5Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1974 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Jan 2, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/411
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Hair dyeing compositions are disclosed which contain an N-substituted o-phenylenediamine, the N-substituent being an alkyl, alkoxyalkyl, hydroxyalkyl, alkylaminoalkyl, dialkylaminoalkyl, phenyl or substituted phenyl. These give reddish shades by purely oxidative means, and the shades are fast to wet treatments and are long-wearing. Also disclosed are methods of dyeing hair with these compositions, as well as certain novel compounds suitable for the purpose, e.g., N-(alkoxyalkyl)-o-phenylenediamines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.